Earhart, W. (1962). A steadfast philosophy: A selection of papers written by Will Earhart dating from 1914. s.n.
Citace podle Chicago (17th ed.)Earhart, Will. A Steadfast Philosophy: A Selection of Papers Written by Will Earhart Dating from 1914. [Washington: s.n, 1962.
Citace podle MLA (9th ed.)Earhart, Will. A Steadfast Philosophy: A Selection of Papers Written by Will Earhart Dating from 1914. s.n, 1962.
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